Short-term Effects of High-Dose Caffeine on Cardiac Arrhythmias in Patients With Heart Failure

jamanetwork.com

This randomized clinical trial evaluates the short-term effects of high-dose caffeine consumption vs placebo in patients with heart failure at increased risk for arrhythmic events. After 500 mg of caffeine administered over a 5-hour period, we found no statistically significant effect of caffeine ingestion.

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